How would you know if you are addicted to minecraft?
Added (1). If you panic because you wake up in the middle of the night and can't find your torch? If you try to mine yourself out of bed in the middle of the night? If you go out at night and look around for creepers and zombies?
Added (2). If you avoid staring at people out of fear they will teleport to you and try to kill you? If you avoid messing with silverfish out of fear there will be more of them in the walls.